4 Mar
2009
4 Mar
'09
10:49 a.m.
On 3 Mar 2009 at 19:03, CSquared wrote:
Interesting. I don't know how I remembered the 90
columns as I never
worked with a Univac computer - only IBM's and various minis which mostly
didn't even have punched card readers at all. I'm not real sure I've
ever even seen one of the Univac punched cards. Your description
of the hole grouping sounds like maybe they encoded characters as
6-bit codes vs. the "12-1 is an A", "12-2 is a B" scheme used by
IBM.
I'm not real sure that's even correct either - it's been a right good while.
I remember the 90 column Univac format, but also remember that Univac
at a very early date also offered 80 column compatibility. Sometimes
that meant selling a completely different computer system, not just
peripherals (e.g. the SS 80 vs. the SS 90 systems).
I haven't been following this thread very closely, but I trust
someone has mentioned the 96 column System/3 mini-card:
http://homepages.cwi.nl/~dik/english/codes/96col.html
Holds more characters, but less data than a standard 80 column card.
Cheers,
Chuck